Travel to the Gili Islands

Hi,
I am looking to travel to the Gilli Islands in April next year and am wondering what is the most efficient way to get to the islands from Denpasar, without spending too much money. Also, if it would be cheaper to wait until we got there before we booked accomodation?

Any information or websites you can let me know about regarding the Gili Islands would be much appreciated!

To best way to reach the Gilis from Lombok is via Bangsal harbour. A public boat costs not more than Rp. 10,000 to any of the Gili islands.If you stay in Bali, then take a Perama shuttle. The ride will take 4 hours and costs about Rp. 200.000.For more detailed information about getting there and some ideas about what to do there, check http://indonesia-travel.lestariweb.com/E/NusaTenggara-Travel-Gili.htm